DICOM file send through peers taking more time

There’s no way you can improve speed through the configuration file.

When sending studies to an Orthanc peer, Orthanc just sends the DICOM files over HTTP and transfert speed mainly depends on your network bandwidth/configuration.

Please, check your logs on both side to evaluate the problem.

Transmission from one Orthanc to the other is performed everyday on thousands of system so it’s considered a ‘stable’ feature. In your case, your issue is probably related to networking issues that are in no way related to the configuration file.

Please tell me how to check logs?

http://book.orthanc-server.com/faq/log.html